<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <div>
        <!-- 搜索与添加区域 -->
        <el-row :gutter="20">
          <el-col :span="8">
            <el-input
              placeholder="请输入内容"
              clearable
              @clear="getUserList"
              v-model="queryInfo.query"
            >
              <el-button
                slot="append"
                icon="el-icon-search"
                @click="getUserList"
              ></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
            <el-button
              type="primary"
              @click="addDialogVisible=true"
            >添加用户</el-button>
          </el-col>
        </el-row>
        <!-- 用户列表区域 -->
        <el-table
          :data="userList"
          border
          stripe
        >
          <el-table-column type="index" />
          <el-table-column
            prop="username"
            label="姓名"
          ></el-table-column>
          <el-table-column
            prop="email"
            label="邮箱"
          ></el-table-column>
          <el-table-column
            prop="mobile"
            label="电话"
          ></el-table-column>
          <el-table-column
            prop="role_name"
            label="角色"
          ></el-table-column>
          <el-table-column
            prop="mg_state"
            label="状态"
          >
            <template slot-scope="scope">
              <el-switch
                v-model="scope.row.mg_state"
                @change="userStateChanged(scope.row)"
              ></el-switch>
            </template>
          </el-table-column>
          <el-table-column
            label="操作"
            width="180px"
          >
            <template slot-scope="scope">
              <!-- 修改按钮 -->
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
              <!-- 删除按钮 -->
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
              <!-- 分配角色按钮 -->
              <el-tooltip
                effect="dark"
                content="分配角色"
                placement="top"
                :enterable="false"
              >
                <el-button
                  type="warning"
                  icon="el-icon-setting"
                  size="mini"
                  @click="setRole(scope.row)"
                ></el-button>
              </el-tooltip>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页区域 -->
        <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
        >
        </el-pagination>
      </div>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      @close="addDialogClosed"
      width="50%"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item
          label="用户名"
          prop="username"
        >
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item
          label="密码"
          prop="password"
        >
          <el-input
            v-model="addForm.password"
            type="password"
          ></el-input>
        </el-form-item>
        <el-form-item
          label="邮箱"
          prop="email"
        >
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item
          label="电话"
          prop="mobile"
        >
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="addUser"
        >确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      @close="editDialogClosed"
      width="50%"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input
            v-model="editForm.username"
            disabled
          ></el-input>
        </el-form-item>
        <el-form-item
          label="邮箱"
          prop="email"
        >
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item
          label="手机号"
          prop="mobile"
        >
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="editUserInfo"
        >确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="30%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户:{{userinfo.username}}</p>
        <p>当前的角色:{{userinfo.role_name}}</p>
        <p>分配新角色:
          <el-select
            v-model="seletedRoelId"
            placeholder="请选择"
          >
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="saveRoleInfo"
        >确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
import { async } from 'q'
export default {
  data() {
    //   验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb() //合法的邮箱
      }
      cb(new Error('请输入合法的邮箱'))
    }
    //   验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }

    return {
      seletedRoelId: '', //已选中的角色id值
      rolesList: [], //所有角色的数据列表
      userinfo: {}, //需要被分配角色的用户信息
      setRoleDialogVisible: false, //控制分配角色对话框的显示与隐藏
      editFormRules: {
        //修改表单的验证规则对象
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      editForm: {}, //查询到的用户信息对象
      editDialogVisible: false, //控制修改用户对话框的显示与隐藏
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      }, //添加用户的表单数据
      addFormRules: {
        //添加表单的验证规则对象
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '用户名的长度在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      addDialogVisible: false, //控制添加用户对话框的显示与隐藏
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2 //每页显示多少条数据
      },
      userList: [],
      total: 0
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    setRoleDialogClosed() {//监听分配角色对话框的关闭事件
      this.seletedRoelId=''
      this.userinfo={}
    },
    async saveRoleInfo() {
      //点击按钮，分配角色
      if (!this.seletedRoelId) return this.$message.error('请选择要分配的角色!')
      const {
        data: res
      } = await this.$http.put(`users/${this.userinfo.id}/role`, {
        rid: this.seletedRoelId
      })
      if (res.meta.status !== 200) return this.$message.error('更新角色失败!')
      this.$message.success('更新角色成功!')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    async setRole(userinfo) {
      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200)
        return this.$message.error('获取角色列表失败!')
      this.rolesList = res.data
      //展示分配角色的对话框
      this.userinfo = userinfo
      this.setRoleDialogVisible = true
    },
    async removeUserById(id) {
      //根据id删除对应的用户信息
      //如果用户确认删除，则返回为字符串confirm
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err) //用户取消了删除则返回值为字符串cancel
      if (confirmResult != 'confirm') return this.$message.info('已取消删除')
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status != 200)
        return this.$message.error('删除用户信息失败!')
      this.$message.success('删除用户信息成功!')
      this.getUserList()
    },
    editUserInfo() {
      //修改用户信息并提交
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        //发起修改用户信息的修改请求
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        )
        if (res.meta.status != 200)
          return this.$message.error('修改用户信息失败!')
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('修改用户信息成功!')
      })
    },
    editDialogClosed() {
      //监听修改对话框的关闭事件
      this.$refs.editFormRef.resetFields()
    },
    async showEditDialog(id) {
      //展示编辑的用户对话框
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status != 200)
        return this.$message.error('查询用户信息失败!')
      this.editForm = res.data
    },
    addUser() {
      //点击按钮，添加新用户
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败!')
        this.$message.success('添加用户成功!')
        this.addDialogVisible = false //隐藏添加的对话框
        this.getUserList() //重新获取用户列表数据
      })
    },
    addDialogClosed() {
      //监听用户对话框的关闭事件
      this.$refs.addFormRef.resetFields()
    },
    async userStateChanged(userinfo) {
      //监听switch开关状态的改变
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
    },
    handleSizeChange(newSize) {
      //监听pagesize改变的事件
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200)
        return this.$message.error('获取用户列表失败!')
      this.userList = res.data.users
      this.total = res.data.total
    }
  }
}
</script>
<style lang="less" scoped>
</style>